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TTE STATES PATENT Trice,

PROCESS OF MAKING PICTURES.

SPECIFICATION forming part of Letters Patent No. 395,234, dated December 25, 1888.

Application filed May 22, 1888. Serial No. 274,643. (No specimens.)

To all whom it may concern.-

Be it known that I, DAVID IsAACsON, of Providence, in the county of Providence, State of Rhode Island, have invented acertain new and useful Improvement in the Process of Making Pictures, of which the following is a description sufficiently full, clear, and exact to enable any person skilled in the art or science to which said invention appertains to make and use the same.

My invention relates to the class of pietures which are made by the albumen process and then transferred to glass; and it consists in certain novel features, as hereinafter fully set forth and claimed, the object being to produce a more artistic and otherwise desirable article of this character than is now in ordinary use.

The nature of the improvement will be readily understood by all conversant with such matters from the following explanation.

For convenience of reference, the formulas of the various compounds used in the process are given and numbered.

1. The oil (o/uponnd.-Dissolve about one table-spoonful of common salt in onehalf pint of cold-pressed English castor-oil. The salt should be pulverized and perfectly pure.

2. The on uci'lagz'nous com iioun d.Take onefourth of a pound of white gum-arabic and make a saturated solution with hot water, to which add about a table-spoonful of powdered sugar. Let it cool partially and then strain it. After it is strained, and when perfectly cold, add the white of one and mix. thoroughly. The should be well beaten before being added to the other ingredients.

3. The fcrebinl/ziae con/poi!nd.Take one fourth of a pound of Venice turpentine and one gill of pure alcohol. Mix and let it stand for twenty-fmir hours, and then (.lecant.

4. The purufiine compound. 'lake one- :fourth of a pound of beeswax and one-eighth of a pound of paraffine. Melt them together and add about one tea-spoonful of firbalsam.

T/ic lacquer compou12d.lake one-fourth of a pound of ordinary white lacquer and add one pint of alcohol. Let it stand two or three days until dissolved, and then decant.

(5. The plasfer-of-purz's compound.lakc a sufficient quantity of plaster-of-paris and mix it with water until sufficiently plastic. Then take about two table-spoonfuls of this mixture and add about one tea-spoonful of the mucilaginous compound (No. 2) to it and miX thoroughly.

In carrying out my improved process I first take an ordinary albumen print, (on paper,) immerse it in hot water, (not boiling,) and let it remain from five or ten minutes, or while the albumen becomes sufficiently softened to enable it to be easily removed from the paper. I then remove the print from the hot water and place it between two sheets of soft white blotting-paper to absorb the water on its surfaces. When the water on the surfaces of the print has been absorbed, it is carefully re moved from the blotting-paper and placed on a sheet of plate-glass with the albumen side downward and a thin coating of the oil compound (No. 1) applied with a wide camels hair brush 'to the back of the print. The print is then left on the glass from five to ten minutes, or until the picture can be dimly seen through the paper when viewed from the oiled side, after which the surplus oil on the back of the print is absorbed with blottingpaper and the print turned very carefully on the glass by means of a thin spatula or similar implement to bring its face side upward. After the print has been turned on the glass apply a thin coating of the mucilaginous compound (No. 2) to the albumen with a soft camelshair brush. As soon as the albumen of the print has been coated with the muci' laginous compound, (No. 2,) and before said compound dries or hardens, I take the print and place it carefully on a clean glass with its albumen side downward or next the glass, after which I take an artists rubber and press and rub it down thoroughly onto the glass, or until the air bubbles and surplus compound (No. 2) are expelled as fully as possible from between the print and glass. The glass, with the print adhering thereto, is then placed in a warm room, where it is left from one to twelve hours, according to circumstances, the temperature of the room being kept at about 100 Fahrenheit. After the print has remained in the warm room a sufficient length of time to cause the albumen to adhere to the glass properly it is taken out and the paper carefully removed from the albumen by means of hot (not boiling) saltwater applied thereto with a soft sponge, the paper being rubbed lightly during the process. After the paper has been removed the glass and adhering albumen are again placed in the warm room, and when dry are removed and the back of the albumen coated with the terebinthine compound, 0. which is applied thereto by means of a soft camels-hair brush while the albumen and glass are warm. The glass and albumen are then replaced in the warm room for about ten minutes, or until the coating (No. has dried sufficiently. \Vhen the coating (No. 3) has been dried until sufficiently hard, the glass and its adhering albumen are again taken from the warm room and a piece of white tissue-papcr cut to the size of the glass is pressed down onto said coating and immediately peeled off, thereby removing all dust, dirt, &c., which may have adhered to the coatin g. After removing the tissue-paper the picture is painted in suitable oil-colors in the usual manner and covered on the back with a thick coating of paint, which is mixed with size (preferably Japan gold size) to cause it to dry and harden rapidly. After the outer coat of paint has dried and hardened a thin coating of the parafline compound (No. l) applied to it with a camels-hair brush, said compound being used at a low temperature, or when just warm enough to remain in a liquid state. \Vhen the para'lfine coating (No. 4) has dried, apply to it a thin coating of the lacquer compound (No. 5) and let it dry. coating of paraffine compound (No. i) has dried apply a thick coat of the plaster-of-paris compound (No. (3) to the back of the picture and let it harden. \Vhen the plaster has hardened thoroughly, apply to it a coatin of the lacquer compound (No. 5) or a coating of shellac, to render it waterproof. The sugar in the mucilaginous compound (No. 2) adheres better to the albumen, and also renders it more transparent. The salt in the oil compound (No. 1) and in the water softens the paper and enables it to be more easily removed than when it is not used. The glass employed is preferably oval or concavo-convex, the albumen being applied to the concave side.

It will be obvious that the pictures are especially adapted for jewelry, being readily inserted in pins, ear-rin gs, sleeve-buttons, &c.; also, that they are thoroughly water-proof, and hence very desirable.

Having thus explained my invention, what I claim is- 1. That improvement in the artof making pictures which consists, essentially, in immersing an albumen print 'on paper in hot water until the albumen is softened, placing After the it on a piece of glass with the paper outward, saturating the paper with an oil compound, turning the print to bring the albumen side outward, coating the albumen with a mucilaginous compound, placing the print with its albumen side downward on the glass to be used in forming the picture, rubbing it down to expel the surplus mucilaginous compound, exposing it to heat to cause the albumen to adhere to the glass, removing the paper from the albumen, coating the outer side of the albumen with a terebinthine compound, re-

moving the dust and dirt from the terebinthine coatin by means of tissue-paper, painting the picture in colors, coating it on the back with pai nt,coatin g the paint with a paraffine compound, coverin the paraffinecoating with a coating of lacquer compound, and covering t11(l1(-}-6Ilf0l0l1lg the back of the picture with a plaster-of-paris compound, substantiall y as set forth.

2. The process for making pictures of the character described, which consists in treating the paper with a compound comprising castor-oil and common salt for softening the paper substantially as set forth.

The process for making pictures of the character described, which consists in treating the glass with a compound comprising gum-arabic, sugar, and the white of an egg, whereby the albumen is secured thereto, substantially as specified.

at. The process for making pictures of the character described, which consists in treating the albumen with a compound comprising turpentine and alcohol, whereby it is rendered transparent after the paper is l'GlIlOYGd therefrom, substantially as set forth.

5. The process for making pictures of the character described, which consists in press ing tissue-paper upon the albumen and then peeling it off to remove the dirt, dust, &c., after it has been coated with a terebimahine compound, substantially as specified.

(i. The process for making pictures of the character described, which consists in coating the paint on the albumen with a compound comprising beeswax, paral'fine, and fir balsam, substantially as set forth.

7. The process for making pictures of the character described, which consists in applying a coating conl inising lacquer and alcohol to the mrafline compound, substantially as specified.

8. The process for making pictures of the character described, which consists in backing or re-onforcing the picture with a compound comprising plaster-of-paris, Castor-oil, and salt, substantially as set forth.

DAVID ISAACSON.

Witnesses:

ADONIRAM J. CUSHING, soLoMoN JACOBS.

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